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Equity, Long-Term Incentive Compensation Plans and Non-controlling Interest - Cash Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Nov. 18, 2019 | Nov. 06, 2019 | Dec. 31, 2019 | Sep. 30, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Jun. 30, 2019
Dividends Payable |  |  |  |  |  |  |  |  |
Cash dividends declared (in dollars per share) |  |  | $ 0.85 | $ 0.75 | $ 0.75 | $ 0.75 |  |  |
Payment of dividends |  |  |  |  |  |  | $ 256,332 | $ 237,319 |
Regular cash dividend |  |  |  |  |  |  |  |  |
Dividends Payable |  |  |  |  |  |  |  |  |
Cash dividends declared (in dollars per share) |  | $ 0.85 |  |  |  |  |  |  |
Cash dividends paid per share (in dollars per share) | $ 0.85 |  |  |  |  |  |  |  |
Regular cash dividend | Restricted stock unit, Performance-based and Service-based |  |  |  |  |  |  |  |  |
Dividends Payable |  |  |  |  |  |  |  |  |
Dividends payable |  |  | $ 7,100 |  |  |  | 7,100 |  | $ 7,300
Regular cash dividend | Additional paid-in capital |  |  |  |  |  |  |  |  |
Dividends Payable |  |  |  |  |  |  |  |  |
Payment of dividends |  |  | $ 134,700 |  | $ 114,500 |  | $ 256,300 | $ 234,300 |

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